The modern monitor-defibrillator. A potential source of falsely abnormal ECG recordings.
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Biomedical subjects
Publications and source records attributed to S Ben-Zvi.
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A current major concern of the medical community is the incidence of nosocomial, or hospital-related infection. One of the chief ways a patient may get a nosocomial infection is through medical instrumentation which has been improperly sterilized or incorrectly utilized. The clinical engineer, because of his critical involvement with medical instrumentation, must, in addition to his conventional duties, instruct hospital personnel in the proper sterilization and use of medical instrumentation. In order to accomplish this, the clinical engineer must understand the relationship between nosocomial infection and medical instrumentation, and he must become familiar with basic sterilization procedures as they apply to each class of medical instrumentation.
A large number of in-house preventive maintenance (PM) programs, which call for varying degrees of thoroughness in the checkout of patient care instrumentation, are currently in existence throughout the country. This paper discusses the types of preventive maintenance, or PM procedures, which can be used by a clinical engineering department; the rationale for drafting different types of PM procedures in-house; and some long-term considerations affecting hospital-based inspection programs. Three types of PM procedures are described and compared: general checks; generic procedures; and, specific procedures. An outline is provided for writing a PM procedure; and, a call is made for a national guideline for writing preventive maintenance procedures.
Servicing of microprocessor-based and digital patient care instrumentation presents a special challenge to the in-house clinical engineering program. The complexity of this instrumentation, the cost of test equipment and support materials, and continuing education needs are pressing concerns. Servicing methods available to clinical engineering include the use of manufacturer diagnostics and board or subassembly swapping. Test equipment, such as digital oscilloscopes, logic analyzers, signature analyzers, and logic probes, can also be used during repair, even to the component level. In some instances, clinical engineering may choose alternative service arrangements, such as fee-for-service, service contracts, or maintenance insurance. Clinical engineering must objectively evaluate its resources and the level of technical expertise within the department; a realistic maintenance program for microprocessor-based and digital patient care equipment can thus be developed and can result in significant cost savings.
The Scientific and Medical Instrumentation Center (SMIC) is the clinical engineering program serving the State University of New York's Health Science Center at Brooklyn. SMIC is a separate department within the center's 354-bed University Hospital, and provides many instrumentation support services for the hospital and the center's Basic Sciences Division. Now in its 24th year, SMIC developed the nation's first mandatory initial checkout program for patient care equipment, and in 1973 published the results of a funded pilot preventive maintenance program; this served as a model for the start-up of other PM programs in hospitals across the country and overseas. Today, this 35-person department is primarily responsible for some 7,000 units used in over 60 University Hospital departments and clinics. With its interdisciplinary expertise, SMIC also provides the hospital with many other instrumentation services, including prepurchase evaluation and review, and on-site emergency instrumentation service. SMIC also develops unique devices and instruments for the center's researchers, from the prototype stage through to final construction, and may modify instruments for increased safety and efficacy.
The problems in hospitals which led to the development of the clinical engineering profession are described along with recent changes in the hospital environment. The authors discuss how the profession is adapting to these changes. Also discussed is the tendency for BMETs to move into clinical engineering roles.
A customized instrumentation stand is described for use during transport of cardiothoracic or major surgery patients between the OR and a critical care area. The stand attaches to a patient bed and is equipped with a pulse oximeter, ECG/BP monitor, defibrillator/monitor and support module, oxygen tank, supplies, and medications. The design allows maximum visibility and accessibility, easy movement, and quick attachment to and disconnection from a bed. A similar apparatus may benefit surgical programs facing comparable transport needs.
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